Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 191 · 40 questions

Remember (Digit, digit, zeros): black 0 · brown 1 · red 2 · orange 3 · yellow 4 · green 5 · blue 6 · violet 7 · grey 8 · white 9. Band 1 and band 2 = two digits; band 3 = number of zeros to add. Examples: brown-black-red = 1000 Ω; yellow-violet-brown = 470 Ω; red-red-red = 2200 Ω = 2.2 kΩ.

1. 1.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) violet-grey-brown (b) grey-violet-brown (c) grey-violet-black (d) grey-violet-red
2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 860 Ω resistor? (a) blue-grey-brown (b) grey-blue-red (c) grey-blue-black (d) grey-blue-brown
4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-black (b) grey-brown-brown (c) grey-brown-red (d) brown-grey-brown
5. 5.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
6. 6.🌈 In the resistor colour code, which number does orange stand for?
7. 7.🌈 In the resistor colour code, which number does brown stand for?
8. 8.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-red (b) yellow-grey-brown (c) yellow-grey-black (d) grey-yellow-brown
10. 10.🌈 In the resistor colour code, which number does green stand for?
11. 11.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
12. 12.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
13. 13.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
14. 14.🌈 In the resistor colour code, which number does red stand for?
15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) brown-white-brown (c) white-black-red (d) white-black-brown
16. 16.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
17. 17.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
18. 18.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
19. 19.🌈 In the resistor colour code, which number does black stand for?
20. 20.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
21. 21.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
22. 22.🌈 In the resistor colour code, which number does white stand for?
23. 23.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
24. 24.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
25. 25.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) violet-blue-black (b) violet-violet-black (c) blue-violet-black (d) blue-violet-brown
27. 27.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-red (b) grey-violet-red (c) violet-grey-brown (d) violet-grey-orange
29. 29.🌈 In the resistor colour code, which number does violet stand for?
30. 30.🌈 In the resistor colour code, which number does yellow stand for?
31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) violet-brown-black (b) grey-brown-black (c) violet-brown-brown (d) brown-violet-black
32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) brown-green-orange (b) green-brown-yellow (c) green-brown-red (d) green-brown-orange
33. 33.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
34. 34.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) orange-yellow-black (b) yellow-orange-brown (c) yellow-orange-black (d) green-orange-black
36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-brown (b) green-red-black (c) red-green-black (d) orange-green-black
37. 37.🌈 In the resistor colour code, which number does blue stand for?
38. 38.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
39. 39.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
40. 40.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?

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